THE WARREN COUNTY LAND BRIEF
Land in the
Unglaciated High Allegheny Plateau setting.
Warren County has 884.3 square miles of land in Pennsylvania. 2 mapped landscape regions meet across Warren County: Unglaciated High Allegheny Plateau, Low Lime Drift Plain.
Forest-covered plateau surfaces, high hills and low mountains are underlain by layered sedimentary rocks. Most of this region escaped continental glaciation, leaving deeply cut upland terrain.
Regional context: North Central Appalachians ↗ · Regional mapping across the county footprint
Where the landscape changes
Warren County intersects 2 mapped regional units. The largest mapped shares are:
- Unglaciated High Allegheny Plateau78.4%
- Low Lime Drift Plain21.6%
Erie Drift Plain in Warren County
Low rounded hills, glacial moraines, kettles and wetland areas define the Erie Drift Plain. Its terrain is more varied than nearby flatter farming regions and less rugged than the unglaciated plateaus.
Read the regional source ↗Finding your parcel within Warren County
The atlas lists 32 cities, towns, townships, and Census communities associated with Warren County, including Mead, Sheffield, Pittsfield. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Warren County by land and water
The Census records 14.4 square miles of water within Warren County, or 1.6% of its total area. That share is close to Warren County’s 1.6%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Warren County has 664.9 times the land area of nearby Youngsville borough (1.33 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Crawford County, Elk County, Erie County, Forest County, McKean County, Venango County within Pennsylvania. A tract near one of these lines should be matched to the county identifier on its own records.

